Right-click on the top instance of your design in the
Design Hierarchy View and choose
Show Supply Network Diagram

Tip: To visualize a power domain and all its connections, from the
Schematic Diagrams,
Flow Diagrams and
Block Diagrams right click on an instance included in the extent of the power domain and choose
Show in Supply Network Diagram.

Tip: To quickly jump from the
Supply Network Diagram the control signal of a power switch, select the control port, right click and choose
Go to Source.

Note: For readability, the path to control signals is shortened in the diagram labels. Select the control port to see its full path in the Inspect View.